# Client Kit vs SMARTアドレス帳 for Local Sync

The clearest difference is in-app purchases: Client Kit at none against SMARTアドレス帳 for Local Sync's 1. SMARTアドレス帳 for Local Sync's advantage is update cadence (every 2 months vs every 22 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. SMARTアドレス帳 for Local Sync sells 1 one-off in-app purchase. Client Kit asks for nothing beyond the download.

Client Kit ships an update every 22 months, SMARTアドレス帳 for Local Sync every 2 months. The most recent releases landed on September 20, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Client Kit | SMARTアドレス帳 for Local Sync |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 7.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 8 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Internet Initiative Japan, Inc.](https://appshunter.io/developer/444664358) | [Neos Corporation](https://appshunter.io/developer/455598658) |

## What reviewers say

### Client Kit

[App page](https://appshunter.io/ios/app/client-kit/id598125524)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SMARTアドレス帳 for Local Sync

[App page](https://appshunter.io/ios/app/smart-for-local-sync/id667792796)

This contact management app offers familiar features for organizing contacts, including group creation, bulk messaging, and birthday notifications. It allows for easy searching and management of your address book.

**Highlights:** Group creation and editing, Bulk email sending, Birthday notifications, Favorite contact filtering, Contact search by name, email, or number, Call history display

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 機能制限の解除 | $1.99 | one-time |


## Frequently asked questions

### Is Client Kit free?

Client Kit is free to download, with no in-app purchases.

### Is SMARTアドレス帳 for Local Sync free?

SMARTアドレス帳 for Local Sync is free to download, with in-app purchases available.

### Do Client Kit or SMARTアドレス帳 for Local Sync have ads?

Neither Client Kit nor SMARTアドレス帳 for Local Sync shows ads.

### Which is updated more often, Client Kit or SMARTアドレス帳 for Local Sync?

Client Kit ships an update every 22 months, and SMARTアドレス帳 for Local Sync every 2 months. Most recently, Client Kit was updated on September 20, 2026 and SMARTアドレス帳 for Local Sync on September 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*